CN211731544U

CN211731544U - Front left steering knuckle

Info

Publication number: CN211731544U
Application number: CN202020431696.4U
Authority: CN
Inventors: 刘志贤
Original assignee: Yuhuan Dongchao Auto Parts Factory
Current assignee: Taizhou Dongchao Technology Co.,Ltd.
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-10-23
Anticipated expiration: 2030-03-30

Abstract

The utility model provides a preceding left knuckle belongs to car and hangs part technical field. It has solved current knuckle body and knuckle spindle assembly connection structure and has stabilized inadequately, problem that life is short. This front left knuckle includes the knuckle body, and the middle part position of knuckle body is provided with the axial connection hole, and axial assembly has the main shaft in the axial connection hole, and the outer end of main shaft is used for axial connection automobile wheel hub bearing, is provided with the stop device who prevents the main shaft at the axial connection hole internal circumferential direction of knuckle body between knuckle body and the main shaft. The utility model has the advantages of reasonable design, simply, assembly connection stable in structure can reduce the fatigue of knuckle body effectively, long service life.

Description

Front left steering knuckle

Technical Field

The utility model belongs to the technical field of the car hangs the part, a preceding left knuckle is related to.

Background

Currently, in the technical field of manufacturing of parts of an automobile chassis system, a steering knuckle is one of important parts in the automobile chassis system. The front wheel steering mechanism has the functions of bearing the load of a front shaft of the automobile, supporting and driving the front wheel to rotate around the main pin so as to steer the automobile; the structure shape of the steering knuckle is complex, and the structural characteristics of a shaft, a sleeve, a disc ring, a fork frame and other parts are integrated. With the trend of light weight development in the automotive industry and the increasing performance requirements for chassis systems, more and more complex features are introduced into the knuckle structure to meet the above requirements.

The structure of the existing steering knuckle is as follows: "201220212116.8" is a knuckle applied to an automobile chassis system, which comprises a knuckle body and a knuckle spindle corresponding to the knuckle body, wherein the knuckle body and the knuckle spindle are of a two-body structure; the knuckle body and the knuckle spindle are fastened together in a press-fitting manner.

In the above structure, since both the wheel and the tire assembly are connected to the knuckle spindle through the hub and the bearing assembly; the weight of the vehicle enables the joint surface of the steering knuckle spindle and the steering knuckle body to be subjected to the action of torque, the torque causes fatigue of the steering knuckle body at the inlet and outlet accessories of the shaft hole, therefore, the steering knuckle body and the steering knuckle spindle are fastened together in a press-fitting mode and are easy to separate relatively, the assembling and connecting structure of the steering knuckle body and the steering knuckle spindle is unstable, and the service life is short.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a simple structure, assembly connection stable in structure, long service life's preceding left knuckle.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a preceding left knuckle, includes the knuckle body, the middle part position of knuckle body be provided with the axial connection hole, the axial connection hole in axially assembled have a main shaft, the outer end of main shaft be used for axial connection automobile wheel hub bearing, its characterized in that, knuckle body and main shaft between be provided with the stop device who prevents the main shaft at the axial connection hole internal circumferential direction of knuckle body.

This preceding left knuckle is mainly provided with stop device between knuckle body and main shaft to can prevent effectively through stop device that the main shaft from at the axial connecting hole internal rotation of knuckle body, this stop device has increased the area of contact of the assembly connection of the axial connecting hole of main shaft and knuckle body, decomposes and makes both composition surfaces produce fatigue because the moment effect, and knuckle body and main shaft assembly connection are difficult for producing fatigue, and structural connection is stable, long service life.

In the front left steering knuckle, the rear end part of the main shaft is provided with the circular base, and when the main shaft is axially assembled in the axial connecting hole from inside to outside, the circular base axially abuts against the inner wall of the steering knuckle body to prevent the main shaft from axially shifting in the axial connecting hole. The axial assembling structure of the spindle and the axial connecting hole of the steering knuckle body is stable.

In foretell a front left knuckle, stop device on the outer wall between main shaft and the circular base circumference interval distribution have be the screens arris of radial setting, the edge circumference interval distribution of the axial connecting hole of knuckle body have the screens groove that is radial setting, screens arris and screens groove correspond and distribute, when the main shaft axial assembly in the axial connecting hole, this screens arris is in the screens groove that corresponds and prevents the main shaft at the downthehole circumference of axial connecting of knuckle body rotation in the screens groove that corresponds. Through the cooperation in screens arris and screens groove can prevent effectively that the main shaft from in the axial connecting hole of knuckle body circumferential direction rotatory, and the assembly connection stable in structure, the mechanical fatigue that the assembly of the axial connecting hole that the moment effect made main shaft and knuckle body produced is decomposed to the assembly connection of screens arris and screens groove.

In foretell a left front steering knuckle, the screens groove internal notch end and outer notch end have, the screens groove follow internal notch end to outer notch end taper down, the screens arris be the toper shape, the size, the shape and the screens groove adaptation of this screens arris, the screens arris be in the screens groove of the knuckle body that corresponds, still be provided with between this screens arris and the knuckle body and prevent that the cell wall circumference in the screens groove of screens arris and knuckle body from leaning on wearing and tearing buffering to lean on and lean on the structure. The tapered joint surfaces of the clamping edges and the clamping grooves distribute loads caused by the moment applied to the main shaft by the weight of the vehicle among the adjacent surfaces of the joint surfaces, and the design can effectively reduce fatigue on the steering knuckle body, and is stable in structure and long in service life.

In foretell a left front steering knuckle, the buffering support to lean on the structure to include that elastic rubber supports and leans on the piece, the middle part position of the both sides cell wall in the screens groove of steering knuckle body all be provided with the buffering and support and lean on the position, elastic rubber support to lean on the piece to inlay respectively and locate corresponding buffering and support and lean on the position, when the screens arris is in the screens groove of the steering knuckle body that corresponds, the both sides buffering that is in the screens groove of steering knuckle body supports to lean on elastic rubber that the piece is all supported and is leaned on the both sides wall that is located the screens arris by relative elasticity. The purpose of setting up like this is to make to have the cushioning effect of torsional moment between main shaft and the knuckle body, improves the stability of main shaft and knuckle body assembly.

In foretell a left knuckle, the buffering support to lean on the position for the arc concave position, this buffering supports to lean on the radian of position and the same setting of the radian of axial connecting hole, the size, the shape and the buffering of elasticity rubber support the piece and support and lean on the phase adaptation. The purpose of setting up like this is to make the elastic rubber support the piece to support the effort relatively stable, and the elasticity supports to lean on the effect better.

In the front left steering knuckle, the middle position of the steering knuckle body is provided with a circular boss arranged from the inside to the outside, and the axial connecting hole is positioned in the middle of the circular boss. The purpose of setting up like this is to increase the mechanical strength of knuckle body and main shaft assembly position, long service life.

Compared with the prior art, the front left steering knuckle has the advantages that: the structure design is reasonable and simple, the assembly and connection structure is stable, the fatigue of the steering knuckle body can be effectively reduced, and the service life is long.

Drawings

Fig. 1 is a cross-sectional structural schematic view of the present front left knuckle.

Fig. 2 is a schematic sectional view of the stopper device for both the main shaft and the knuckle body in the present front left knuckle.

Fig. 3 is a schematic perspective view of the main shaft in the present front left knuckle.

In the figure, 1, a knuckle body; 2. a main shaft; 3. an automobile hub bearing; 4. a circular base; 5. a clamping edge; 6. an elastic rubber abutment block; 7. a round boss.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the front left steering knuckle mainly comprises a steering knuckle body 1, an axial connecting hole is formed in the middle of the steering knuckle body 1, a main shaft 2 is axially assembled in the axial connecting hole, and the outer end of the main shaft 2 is axially connected with an automobile hub bearing 3; the axial connecting hole assembling structure of the main shaft 2 and the steering knuckle body 1 is as follows: the rear end part of the main shaft 2 is provided with a circular base 4, and when the main shaft 2 is axially assembled in the axial connecting hole from inside to outside, the circular base 4 is axially abutted against the inner wall of the steering knuckle body 1 to prevent the main shaft 2 from axially shifting in the axial connecting hole.

A limiting device for preventing the main shaft 2 from rotating in the circumferential direction in the axial connecting hole of the steering knuckle body 1 is arranged between the steering knuckle body 1 and the main shaft 2; during actual manufacturing, the specific implementation mode of the limiting device is as follows: the clamping edges 5 which are radially arranged are circumferentially distributed at intervals on the outer wall between the main shaft 2 and the circular base 4, the clamping grooves which are radially arranged are circumferentially distributed at intervals on the edge of the axial connecting hole of the knuckle body 1, the clamping edges 5 and the clamping grooves are correspondingly distributed, and when the main shaft 2 is axially assembled in the axial connecting hole, the clamping edges 5 are positioned in the corresponding clamping grooves to prevent the main shaft 2 from circumferentially rotating in the axial connecting hole of the knuckle body 1; specifically speaking: this screens groove has interior notch end and outer notch end, and the screens groove is followed interior notch end to outer notch end taper, screens arris 5 is the toper shape, the size, the shape and the screens groove adaptation of this screens arris 5, screens arris 5 is located the screens groove of the knuckle body 1 that corresponds, still is provided with between this screens arris 5 and the knuckle body 1 and prevents that the cell wall circumference in the screens groove of screens arris 5 and knuckle body 1 from leaning on the buffering of wearing and tearing and leaning on the structure.

In actual manufacturing, the specific implementation of the buffer abutting structure is as follows: the middle positions of two side groove walls of a clamping groove of the steering knuckle body 1 are respectively provided with a buffering abutting position, the elastic rubber abutting blocks 6 are respectively embedded in the corresponding buffering abutting positions, and when the clamping edge 5 is positioned in the corresponding clamping groove of the steering knuckle body 1, the elastic rubber abutting blocks 6 positioned at the buffering abutting positions on the two sides of the clamping groove of the steering knuckle body 1 are elastically abutted against two side walls of the clamping edge 5; specifically speaking: this buffering is supported and is leaned on the position to be the arc concave position, and this buffering is supported and is leaned on the radian of position and the same setting of radian of axial connecting hole, and elastic rubber supports and leans on the size, the shape and the buffering of piece 6 and supports and lean on the phase adaptation.

In order to increase the mechanical strength of the joint surface of the steering knuckle body 1 and the main shaft 2, a round boss 7 arranged from the inner side to the outer side is arranged in the middle of the steering knuckle body 1, and the axial connecting hole is located in the middle of the round boss 7.

Those not described in detail in this specification are within the skill of the art. The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a front left knuckle, includes knuckle body (1), the middle part position of knuckle body (1) be provided with the axial connection hole, the axial connection hole in axially be equipped with main shaft (2), the outer end of main shaft (2) be used for axial connection automobile wheel hub bearing (3), its characterized in that, knuckle body (1) and main shaft (2) between be provided with and prevent main shaft (2) at the downthehole circumferential direction's of axial connection of knuckle body (1) stop device.

2. The front left steering knuckle according to claim 1, characterized in that the rear end of the main shaft (2) is provided with a circular base (4), and when the main shaft (2) is axially assembled in the axial connecting hole from inside to outside, the circular base (4) is axially abutted against the inner wall of the knuckle body (1) to prevent the main shaft (2) from axially shifting in the axial connecting hole.

3. The front left steering knuckle according to claim 2, wherein the limiting device comprises radially-arranged clamping ribs (5) circumferentially and alternately distributed on the outer wall between the main shaft (2) and the circular base (4), radially-arranged clamping grooves circumferentially and alternately distributed on the edge of the axial connecting hole of the steering knuckle body (1), and the clamping ribs (5) and the clamping grooves are correspondingly distributed, so that when the main shaft (2) is axially assembled in the axial connecting hole, the clamping ribs (5) are positioned in the corresponding clamping grooves to prevent the main shaft (2) from circumferentially rotating in the axial connecting hole of the steering knuckle body (1).

4. The front left steering knuckle according to claim 3, wherein the locking groove has an inner notch end and an outer notch end, the locking groove tapers from the inner notch end to the outer notch end, the locking rib (5) has a tapered shape, the locking rib (5) has a size and a shape matched with those of the locking groove, the locking rib (5) is located in the corresponding locking groove of the steering knuckle body (1), and a buffer abutting structure for preventing the locking rib (5) and the locking groove of the steering knuckle body (1) from being circumferentially abutted and worn is further arranged between the locking rib (5) and the steering knuckle body (1).

5. The front left steering knuckle according to claim 4, wherein the buffering abutting structure comprises elastic rubber abutting blocks (6), the middle positions of the two side groove walls of the clamping groove of the knuckle body (1) are provided with buffering abutting positions, the elastic rubber abutting blocks (6) are respectively embedded in the corresponding buffering abutting positions, and when the clamping ribs (5) are located in the corresponding clamping grooves of the knuckle body (1), the elastic rubber abutting blocks (6) located in the two side buffering abutting positions of the clamping groove of the knuckle body (1) are relatively elastically abutted against the two side walls of the clamping ribs (5).

6. The front left steering knuckle according to claim 5, wherein the buffer abutting position is an arc-shaped concave position, the radian of the buffer abutting position is the same as that of the axial connecting hole, and the size and the shape of the elastic rubber abutting block (6) are matched with those of the buffer abutting position.

7. The front left steering knuckle according to claim 6, characterized in that the middle of the knuckle body (1) has a circular boss (7) arranged from the inside to the outside, and the axial connecting hole is located at the middle of the circular boss (7).